<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>12_catch方法-异常穿透与值传递</title>

  <!-- 调用自己封装的 Promise -->
  <script src="../Promise_js/12_Promise.js"></script>
</head>
<body>
  
  <script>
    let p = new Promise( (resolve, reject) => {
      setTimeout( () => {
        resolve('ok');
        reject('err')
      }, 1000)
    });

    // catch 方法
    // let result = p.catch(reason => {
    //   console.warn(reason);
    // })
    // console.log(result);


    // 异常穿透
    p.then(value => {
      console.log(111);
    }).then(value => {
      console.log(222);
    }).then(value => {
      console.log(333);
    }).catch(reason => {
      console.log(reason);
    })



  </script>

</body>
</html>